Arsênio is a thrash metal band from Foz do Iguaçu, Paraná, formed in 2012 in the tri-border city where Brazil meets Argentina and Paraguay. The band carries the aggressive, old-school thrash tradition of the Brazilian underground.

Artes Negras is a black/thrash metal band from Buenos Aires, Argentina whose lyrical themes revolve around paganism, death, and Argentine werewolf folklore (the Lobizón). Their debut album "Let There Be Death" was released on CD in 2004 and featured members performing under pseudonyms including Necromandus on vocals, Lordnatt and Nan Noctambulus on guitars, Hellbastard on bass, and Funeris on drums.

Artless was a thrash metal band from Petrópolis, Rio de Janeiro, active in the early 2000s before splitting up. Based in the mountain city roughly 70 km from Rio de Janeiro, the band operated within Brazil's underground thrash scene during a period when the genre was experiencing a renewed wave of activity in the country.

Asfixia is a thrash metal band from Campinas, São Paulo, one of Brazil's most active metal cities outside the capital. The band operates in the old-school thrash tradition, drawing on the deep legacy of the Campinas and São Paulo underground scenes that have produced dozens of aggressive thrash acts since the mid-1980s.

Assault is a speed/thrash metal band from Vitória da Conquista, Bahia, formed in 2021 and playing in the aggressive tradition of Brazilian thrash metal. Operating out of the interior of Bahia — a state better known for axé and forró than thrash — the band channels the raw, high-tempo aggression of the genre with themes rooted in misanthropy and anti-religious sentiment.

Thrash metal band from Três Corações, Minas Gerais, founded in 2008 by guitarist Iuri Grégori, channeling the raw intensity of the Brazilian mining-region metal scene of the 1980s and 90s. Their lyrics address social inequality, corruption, and alienation — entirely in Portuguese — across three albums: "Infernal Massacre" (2008), "World Chaos" (2010), and "Extermínio" (2015), the latter released on Metal Soldiers Records with a marked old-school thrash/death metal edge.

Thrash/crossover band from Campo Grande, Mato Grosso do Sul, formed around 2007–2008, delivering politically charged and pit-ready material that draws equally from classic thrash metal and hardcore punk. Their album "Thrashback from Hell" captures their stripped-down, aggressive approach, placing them squarely in the tradition of Brazilian crossover bands that prioritize speed, aggression, and social commentary.

Thrash metal trio from Campina Grande, Paraíba, consisting of Jairo Tellys on bass and vocals, Felipe Rodrigues on guitar, and Netão Guimarães on drums. Their 2013 debut album "Faces do Horror" is an eight-track assault of old-school thrash, representing the underground metal scene of Brazil's northeastern interior.

A thrash/hardcore crossover band from Tabapuã, a small city in the interior of São Paulo state, active since 2014. Their name — Portuguese for "death certificate" — reflects the blunt, confrontational aesthetic typical of Brazilian crossover, fusing the aggression of classic thrash with the directness and speed of hardcore punk.